One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,11,6,12,5,23)(3,13,18,27,17,26,16,8)(4,19,20,10,22,28,21,9)(14,25,31,30,15,24,32,29)(1,3,5,16,6,17,7,18)(2,8,11,13,12,27,23,26)(4,15,21,31,22,14,20,32)(9,24,19,29,10,25,28,30)(1,4,5,21,6,22,7,20)(2,9,11,19,12,10,23,28)(3,14,16,32,17,15,18,31)(8,24,13,29,27,25,26,30)(1,4)(2,10)(3,15)(5,21)(6,22)(7,20)(8,25)(9,12)(11,28)(13,30)(14,17)(16,31)(18,32)(19,23)(24,27)(26,29) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.